High-speed signaling key



Dec. 15,1925. 1.565.360

H.' E. HALLBORG ET AL HIGH SPEED SIGNALING KEY Filed Oct. 12, 1923 3 Sheets-Sheet 1 'HI'II H. E. HALLBORG El AL area SPEED smmmme KB!- 7 Filed Oct. 12. 1923 :5 Sheets-Sheet 2 29 J2 a 40 J/ W gwuenloz: Henry .E'. Hallbory Harald R. Miller H. E. HALLBORG El AL HIGH SPEED SIGNALING KEY Filed Oct.- 12. 92 3 Sheets-Shoot 5 0 0' I 6.7 1- Q? r g i Z r f 8 f a: I F? a o 64 M Henry E Hallbmy Harald H. Miller Patented Dec. 15, 1925.

HENRY E. HALLBORG AND HAROLD R.

MILLER, OF WASHINGTON, DISTRICT OF GOLUMBIA,

men-seam) SIGNALING KEY.

Application filed October 12, 1923. Serial No. 668,217.

To all whom it may concern Be it known that we, HENRY E. HALL- BORG and HAROLD R. MILLER, citizens of the United States, and residents of Washing- Lb ton, District of Columbia, have made certain new and useful Improvements in High- Speed Signaling Keys, of which the following is a specification.

Our invention relates broadly to electrical circuit controllers, and more particularly to a construction of key for opening or closing an electrical circuit for controlling high power energy at high speed.

One of the objects of our invention is to provide a key construction which is mechanically balanced and which responds to electrically controlling impulses with substantially no mechanical inertia.

Another object of the invention is toprovide a key. having a magnetic control arrangement and armature construction which functions with substantially no electrical inertia whereby the electromagnetic system may be energized at high speed with the armature arranged to instantaneously follow the energizations of the magnets to open or close contacts associated with the armature at high speeds.

Another object of our invention is to promagnetic operating system is well insulated from the operating contacts, enabling radio frequency circuits to be controlled by opening and closing the contact system and those currents entirely isolated from the currents of different character employed in operating the electromagnetic system.

Other objects of the invention are to provide a mechanical arrangement for mounting an electromagnetic key operating systern and an arrangement of bearings for supporting a laminated steel armature in operative relation with the pole faces of the different sets of coils carried by laminated core members.

Other and further objects of the invention will be understood from the following specification by reference to the accompanying drawings, in which:

Figure l is a side elevation of one form of our key construction with the key contacts insulated from the electromagnetic operating structure, enabling the key contacts to control radio frequency currents substanvide a key construction in which the electrotially isolated from the circuits whichoperate the electromagnetic control means; Fig. 2 is a view of the key construction shown in 'Fig. 1 with the electromagnetic operating structure shown in cross-section; Fig. 3 is a plan'view ofrthe key construction shown in Figs. 1 and 2; Fig.4 is a fragmentary crosssectional view of the operating contacts of our key construction shown in the preceding views taken on line A-A of Fig. 3; Fig. 5 is a plan view of the core members and the electromagnetic operating structure employed in our key construction; Fig. 6 is an end view of the electromagnetic operating structure showing the offset positions of the opening and closing coils on the separate core sections; Figs. 7 and 8 are crosssectional and plan views respectively of a modified form of our key construction showing themethod of mounting the operating contacts for a key of smaller capacity than that previously illustrated but capable of high speed operation as a pilot for the high power key illustrated in the other figures; Fig. 9 is a plan view of the arrangement of the opening and closing coils of the key illustrated in Figs. 7 and 8; and Fig. 10 shows the arrangement of the core members and the opening and closing coils.

Our invention finds particular application in high speed signaling circuits for controlling high power are radio transmit ters wherein the high speed pilot keys, which will be hereinafter described, are connected in circuit to energize the opening and closing coils of a set of high power relay keys, the contacts of which are connected in shunt portions of the inductance in the radio transmitting circuits to cause the transmission of signals.

We provide an enclosing casing for the electromagnetic operating system of the key constructionwhich consists of a top casting 1 and a bottom casting 2 secured together by lug portions 3 and clamping bolts while the core member 6 is provided with diagonally oppositely positioned pole pieces 10 and 11. Magnet coils are Wound ach.

of the pole pieces, coils 12 and 1 1 on pole pieces 8 and 9 of core member 5 forming the opening coils for the magnetic system and the magnet coils and 16 on pole pieces 10 and 11 of core member 6 forming the closing coils of the magnetic system. The silicon steel rectangular armature 17 is pivotally mounted between a lower bearing 1.8 and an upper bearing 19 for slight rotative movement between the pole faces 8, 9, 10, and 11. The armature 17 comprises laminated steel sections 20 and 21 spaced apart by the magnetic barrier or separator plate 22 whereby the portion of the armature 2t: is attracted by the opening ma nets 12 and 14: and the lower portion of the an mature 21 is attracted by the closing coil magnets 15 and 16. The laminations and separator plate are secured together by rivets 23 forming a compact amature unit carrying a vertical spindle 2a- With a hollow bore 25 for supplying oil to the lower spindle bearing 18. The contacts which are operated by the electromagnetic system are mounted upon an insulated panel 26 which also supports the bearing 19 for the upper end of the spindle. The panel 26 is supported and substantially spaced from the casing containing the electromagnetic key operating system by means of insular tors 2?, 528, 29 and 230 located in the corners of the panel. The spindle 53% carries a vertical insulator pivoted in the bearing 19 by the stud member v The central lnStlli'ttcCl standard 32 is slotted at its upper extremity as indicated at to be free of the bearing member 19 to the extentthat slight root-wire movement of the spindle is permitted. 1 series of contacts 35, 36, and 38 are carried on a casting secured to the top of tie spindle The contacts are moved simultaneously with the rotative movement of the standarl to present the contact faces on the ends of the radial arms to the stationary cooperating contacts 39, 16, 1'1 and 42 which are mounted on panel 26 onstandards 14-, 1.5 and 46 respectively. Each of: the contacts is adjustable relative to the standards by means of a screw threaded member 17. A substantial connection is maintained between contact 4-2 and standardv 16 by means of tiexi le connector t". Contact all is electrically connected with standard 4-5 by means of flexible connector 49. Contacts 39 and are connected in series through flexible connectors 50 and 51 and jumper 52. The terminals of the key Which connects to the radio "frequency circuit to be controlled are indicated at and It will be noted that the potential across the key is divided among the four sets of contacts which together with the fact that large area contacts are used insures minimun'i sparking and deterioration of the contacts.

The modified form of key Which We have illustrated in Figs. 8 to 10 inclusive serves as a pilot key to control the opening and closing coils of the key previously described. A modified form of casing 58 is shown in which core members 55 and 56 separated by magnetic barrier 57 are secured by means of clamping screws 59 screwed into a shoulder 60 on the interior of the casing. A single bearing 61 for the laminated steel armature 62 is provided. The armature is constructed of laminated steel sections separated by a magnetic barrier as previously described, one armature section being attracted by opening coils 63 and 6 1 arm the other armature being operated upon by magnet coils (35' and 66. The armature spindle pivoted at 6'? includes an insulated portion 68 carrying at its extremity a contact member 69. Adjustable contacts '70 and 71 are carried in standards 72 and 73 sup-- ported on insulating block 74. The contact tongue or the contact member 69 carries contact points/T5. The contact memher is connected with terminal post 76 on insulator block 77 through flexible connector '78. The circuits to be controlled by the pilot key are connectedwith binding post 76 and standards 72and 731 The opening magnet c is 653 and 6 1 are electrically connected with an external control circuit through binding posts 79; The closing coil magnets and 66 are Connected with an external control circuit through binding posts 80.

In the operation of our key construction the opening coil magnets in diagonally opposite alignment are energized and simultaneously attract one section of the laminated steel armature.- In the case of the key construction illustrated in Figures 1 to 6 the vertical spindle is given a quick rotative'twist opening the key contacts. Vhen the closing coils are energized and the opening coils are deenergized, the closing coils act upon the other section or" the armature simultaneously thereby imparting a quick rotativ'e movement to the vertical spindle in opposite direction closing the key contacts.

When the opening coils of the key construction illustrated in Figs. 7 and 10 inclusive are ener ized, the contact tongue on the contact member 69 is gii'en a quick twist, moving the contact from one tionary contact to another. The arrangement of the separated core sections and sepa rated magnetic sections of the armature mounted in a vertical axis With contacts carried at the extremity of the axis enables high speed operation of the keys with substantially negligible mechanical and electrical inertia.

While We have described our invention in certain specific embodiments. it is to be un lid derstood that various modifications may be made and that we intend no limitations upon our invention other than are imposed by the scope of the appended claims.

lVhat we claim and desire to secure by Letters Patent of the United States is as follows:

1. A high speed signaling key, comprising in combination a casing, a plurality of core sections clamped in said casing, a magnetic barrier member positioned between said core members, a pair of pole pieces carried by each of said core members diagonally opposite one to the other, an armature pivoted between said pole pieces, said armature having a pair of magnetic sections separated by a magnetic barrier, a contact operating spindle carried by said aramture, and means whereby one of said armature sections will be acted upon by one pair of said pole pieces and the other magnetic section of said armature will be operated by said other pair of pole pieces.

2. A high speed signaling key, comprising in combination a magnetic system and a contact system substantially spaced apart from said magnetic system, said magnetic system including a pair of core members positioned adjacent each other but magnetically spaced apart, a pair of magnet coils carried by each of said core members, an armature pivoted between said magnet coils comprising a pair of magnetic sections magnetically spaced apart, a connection between said armature and said contact system, and means whereby one pair of said magnets operates upon one section of said armature and the other pair of said magnets operates on the other section of said armature.

3. A high speed signaling key, comprising in combination an electromagnetic system and a contact system operated by said electromagnetic system, said electromagnetic systemincluding a spindle, an armature having a pairof separated magnetic sections carried adjacent one end of said spindle and a set of contacts carried adjacent the other end of said spindle, and a plurality of sets of magnets positioned adjacent said armature and arranged with one set adjacent each of said magnetic sections.

4. A high speed signaling key, comprising in combination an electromagnetic operating system mounted on a frame, a panel mounted adjacent said frame and spaced therefrom byinsulating means, a plurality of contacts carried by said panel, a plurality of magnets in said electromagnetic system and an armature operated by said magnets, a' spindle carried by said armature, an insulated extension on said spindle and bearing members for said spindle on said frame and on said panel, a plurality of contacts carried by said insulated extensions and arranged to complete connections with said contacts on said panel when said armature is operated upon by said magnets.

insulated from said electromagnetic operating system, said electromagnetic operating system comprising stationary magnets forming closing coils positioned in one plane and stationary magnets forming opening coils positioned in another plane, a spindle pivoted between said magnets carrying a pair of armatures adjacent one end, one of said armatures being arranged in operative relation to said closing coils and the other of said armatures being arranged to be acted upon by said opening coils, said contact system being carried adjacent the opposite end of said spindle and .including a plurality of contacts arranged to be moved in opposite directions in accordance with the energization of said closing coils or said opening coils.

6. A high speed signaling key, comprising in combination a pair of cores positioned in adjacent planes, a ,pair of pole pieces carried by each of said cores in diagonally opposite positions, a pairv of closing coils series connected on one pair of said pole pieces and a pair of opening coils, carried by said other pair of pole pieces and series connected, an armature pivotally mounted between said pole pieces having separate means responsive to each of said pairs of coils, and'contacts carried by one end of said pivoted armature whereby slight rotative movement in opposite directions may be imparted to said contact system to control electrical circuits at high speeds.

7. A high speed signaling key, comprising in combination an electromagnetic system and a contact system operated by said electromagnetic system, said electromagnetic system including a spindle, an armature having a pair of separated magnetic sections carried adjacent one end of said spindle and a set of contacts carried adjacent the other end of said spindle comprising a plurality of radial arms with contacts at the extremity thereof cooperating with fixed contacts carried by said contact system, and a plurality of sets of magnets positioned adjacent said armature and arranged with one set opposite each of said magnetic sections.

8. A high speed signaling key, comprising in combination an electromagnetic operating system mounted on said frame, a panel mounted adjacent said frame and spaced therefrom by insulating means, a plurality of contacts carried by said panel having a pair thereof electrically connected in series, a plurality of magnets in said electromagnetic system and an armature operated by said magnets, a spindle carried by said armature, an insulated extension on said spindle and bearing members for said spindle on said frame and on said panel, a plurality of contacts carried by radial arms at the extremity of said insulated extension and electrically connected in series whereby said contacts on said arms contact with said contacts on said panel 10 and divide the power among the several contacts When said armature is operated upon by said magnets.

HENRY E. HALLBORG. HAROLD R. MILLER. 

